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Hi, question to the roofing experts here please :) , I am looking to use 18mm OSB sarking for roof. I am sure I read some recommendation about using tongue and groove version of same - do you know if it is easy to get such a thing and has anyone used it (pros and cons). Thanks for help...

many thanks noseall :D very helpful !

hi, beginner roof questions to the roofing experts PLEASE! for my extension i’ll ask these in the order I think I need to be laying things so feel free to correct me please! 1) Sarking boards first – do you use OSB board and what is common thicknesses for roof? 2) roofing felt next -...

Hi, when fitting expansion bolts for fixing timber plate under DPC are there any special considerations for making the bolts more corrosion resistant? (I know about wrapping the timber plate itself in damp proof material but now I wonder about the bolts..) I have been looking at some...

Thanks again woody - much indebted :D !! Thinking about your comments I have made up a sketch showing cross section through an end wall of extension and I’m thinking I could either go either 0.9m deep mass fill concrete or 1.125m depending on whether wanted 2 or 1 block course before brick...

Many thanks woody! much appreciated – you and everyone here that’s helped me are stars, that’s a lot answered :D :D . I had been thinking about mass filling to get out of the ground quicker so it is reassuring to hear you say in practice this might be done. I’m thinking to mass fill it...

"I know it is the builder" - is it one of the 2 or 3 large builders in Aberdeenshire like xxx - i'm not wanting you to name all i wanted to say is for these large outfits i am aware of people who have had success in major rectifications using NHBC this ground level above DPC where is that...

thanks noseall :) on the subject of founds i dug a test hole last year at edge of house a day before i went on holiday (attached here) to see how far to the top of my founds (some 5 block down). I then stupidly ran out of time and filled it back in before i could dig at the earth at side of...

thanks noseall, woody, shytalkz, i'll try using that mm units option ! - (i like the fact you can dimension things really quickly in sketchup - it's also a lot warmer planning it on sketchup than starting work outside at the moment :lol: ) any thoughts on my queries please as i know...

Hi noseall thanks for looking :) the package i used for the sketches (Googlesketchup) displays sizes in metres e.g. 145mm appears as 0.145m or 2mm appears as 0.002m! (It was on a thread here that i saw someone saying Googlesketchup was good and at first i didnt think it was very good until i...

Hi I have been sketching out a cross section of my planned timber frame single storey extension. The attached “ext2” shows the overall idea and “ext1” a closer detail on the floor joist to existing wall. I would be much obliged for anything you see wrong on either sketch please plus...

Thanks again everyone for comments, very interesting. I’m thinking I’ll be going for the regularised timber I have seen as that appeared to be the only timber I saw that all the pukka looking C16 or C24 stamps on it. (The sawn stuff I saw didn’t have C16 or C24 stamps on it and whilst I’m...

was hoping you could help me out again please with some basics when talking about a) 50x150 C16 timber I have found actual sizes 45x145mm or 44x145 b) 50x100 is 45x95mm c) 50x 200 is 44x195mm I’m understanding the 50/150 etc is the prefinished size and the actual size is the...

Hi, I have 150x50 flooring joists currently specified for my ground floor extension, these will be over slightly less than 3m span. I am looking at putting in an upright piano which i have helped move before and whilst i don't know how heavy it is it is ** heavy :oops: (older style)...

i was thinking because i had big patio doors in the middle of the exterior wall shown in that cross section that i needed a dwarf wall for some reason i couldn't work out - (i guess that's a load of rubbish)

oops hit the send button too quick without attaching, here is the attachment

Thanks again woody you are a star ! very helpful :D (the fig A and B are not exact copies from my plans but the same as shown in my plans) That’s me decided - going for the “fig A” option. What got me wondering is although my plans show a detail same as “fig A” they also show a dwarf wall...

Help again please... :wink: for my timber frame smallish extension (with brick outer wall) 7m x3m I am wanting to build the timber frame wall sections in advance. Whilst I have seen you can build floor joists into timber frame walls like below fig A I am thinking I would prefer to build...

thanks for comments woody & chappers. :D I will probably use masonry nails for sole plate (plus hold down straps to timber frame). Curious on this chem-fixing - i typed chem fix into google and went to fastfixdirect which has hammer and spin- in capsules - is that what chem fixing is - and...

Hi, some questions please on fixing a timber sole plate on to 100mm thick concrete block on top of dpc/dpm; ground floor (Timber frame wall panels will go on top of sole plate and bottom rail of the wall panels are 89x38mm cls timber) Recommendations please for common sizes of sole plate...